Как читать полный вывод?

Question

Мне нужно разобрать this. Я сохраняю возвращаемый ответ url в буфере. Но когда я перемещаю полученный буфер в строку, я получаю сломанный вывод, и поэтому я не могу его разобрать. Однако, когда я печатаю переменную line, я вижу, что весь ответ получен. Это какой-то переполнение буфера для строки? Как я могу разобрать ответ, так как он также содержит функцию обертки, и поэтому я не думаю, что могу даже использовать JSONReader!

Вот код-

URL url = new URL("http://chartapi.finance.yahoo.com/instrument/1.0/FB/chartdata;type=quote;range=1d/json"); 
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection(); 
try { 
    InputStream inputStream = new BufferedInputStream(urlConnection.getInputStream()); 
    StringBuffer buffer = new StringBuffer(); 
    if (inputStream == null) return; 

    reader = new BufferedReader(new InputStreamReader(inputStream)); 

    String line; 
    while ((line = reader.readLine()) != null) { 
    //Log.d(TAG,line); 
    buffer.append(line + "\n"); 
    } 

    Log.d(TAG,buffer.length() +buffer.toString()); 
} 

Answer 1

Ваш код, без System.out.println внутри время печатает содержимое правильно (странно), ссылка, которую вы прошли кажется формат JSON НО в начале файла у вас есть

finance_charts_json_callback (

, который не является частью строки JSON.

---

Для того, чтобы получить правильные данные, быстро устранить проблему, игнорировать эти символы, а окончательный скобку:

String jsonString = buffer.substring(30, buffer.length() - 2); 
JsonObject jobj = new Gson().fromJson(jsonString, JsonObject.class); 

Теперь у вас есть JSonObject, так что вы можете передать его по именам атрибутов:

System.out.println(jobj.get("Timestamp").toString()); 
System.out.println(jobj.get("labels").toString()); 
System.out.println(jobj.get("ranges").toString()); 
System.out.println(jobj.get("series").toString()); 

ВЫХОД (восстановленный)

{"min":1468589400,"max":1468612800} 
[1468591200,1468594800,1468598400,1468602000,1468605600,1468609200,1468612800] 
{"close":{"min":116.6050,"max":118.1800},"high":{"min":116.6562,"max":118.2800},"low":{"min":116.5800,"max":118.1600},"open":{"min":116.6000,"max":118.1786},"volume":{"min":100,"max":1390500}} 
[{"Timestamp":1468589424,"close":117.8742,"high":117.9000,"low":117.8050,"open":117.8300,"volume":1390500},{"Timestamp":1468589460,"close":117.8350,"high":117.9900,"low":117.8200,"open":117.8850,"volume":112100},{"Timestamp":1468589578,"close":117.7300,"high":117.8200,"low":117.7000,"open":117.8200,"volume":70600},{"Timestamp":1468589580,"close":117.9770,"high":117.9900,"low":117.7100,"open":117.7600,"volume":91000},{"Timestamp":1468589698,"close":118.0650,"high":118.1000,"low":117.9700,"open":117.9700,"volume":353000},{"Timestamp":1468589701,"close":118.0250,"high":118.0900,"low":117.9210,"open":118.0735,"volume":108400},{"Timestamp":1468589819,"close":118.0900,"high":118.0900,"low":117.9500,"open":118.0201,"volume":121400},{"Timestamp":1468589879,"close":118.1800,"high":118.2300,"low":118.0900,"open":118.0900,"volume":186000},{"Timestamp":1468589939,"close":118.1700,"high":118.1900,"low":118.0700,"open":118.1764,"volume":84400},{"Timestamp":1468589940,"close":118.1800,"high":118.2800,"low":118.1600,"open":118.1786,"volume":152900},{"Timestamp":1468590000,"close":118.1300,"high":118.2100,"low":118.1100,"open":118.1600,"volume":53800},{"Timestamp":1468590060,"close":118.1800,"high":118.1800,"low":118.0950,"open":118.1200,"volume":91800},{"Timestamp":1468590120,"close":118.1110,"high":118.2200,"low":118.0707,"open":118.1700,"volume":65700},{"Timestamp":1468590239,"close":118.1300,"high":118.1400,"low":118.0179,"open":118.1400,"volume":57800},{"Timestamp":1468590240,"close":118.0500,"high":118.1800,"low":118.0500,"open":118.1100,"volume":75000},{"Timestamp":1468590300,"close":118.1000,"high":118.1500,"low":118.0250,"open":118.0449,"volume":51600},{"Timestamp":1468590360,"close":117.9600,"high":118.1100,"low":117.9000,"open":118.1000,"volume":99200},{"Timestamp":1468590421,"close":117.8400,"high":117.9700,"low":117.8200,"open":117.9600,"volume":173800},{"Timestamp":1468590480,"close":117.8800,"high":117.8800,"low":117.8200,"open":117.8300,"volume":92700},{"Timestamp":1468590541,"close":117.7000,"high":117.8850,"low":117.6810,"open":117.8850,"volume":114600},{"Timestamp":1468590659,"close":117.6865,"high":117.7200,"low":117.6600,"open":117.6800,"volume":83200},{"Timestamp":1468590719,"close":117.6300,"high":117.6900,"low":117.4900,"open":117.6800,"volume":121500}, (more results!!!) 

ПОЛНЫЙ КОД:

public static void main(String[] args) throws Exception { 
    URL url = new URL("http://chartapi.finance.yahoo.com/instrument/1.0/FB/chartdata;type=quote;range=1d/json"); 
    HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection(); 
    InputStream inputStream = new BufferedInputStream(urlConnection.getInputStream()); 
    StringBuffer buffer = new StringBuffer(); 
    if (inputStream == null) 
     return; 

    BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream)); 
    String line; 

    while ((line = reader.readLine()) != null) { 
     buffer.append(line + "\n"); 
    } 

    String jsonString = buffer.substring(30, buffer.length() - 2); 
    JsonObject jobj = new Gson().fromJson(jsonString, JsonObject.class); 
    System.out.println(jobj.get("Timestamp").toString()); 
    System.out.println(jobj.get("labels").toString()); 
    System.out.println(jobj.get("ranges").toString()); 
    System.out.println(jobj.get("series").toString()); 

}